Fire-door.



J. E. OSMER,

FIRE DOOR.

APPLICATION FILED FEB-2.1914.

Patented D60. 29, 1914.

idllAT-lild PATENT UEFKQE.

JGHN E. OSllTER, Ol OWGSSO; MICHIGAN, ASSIGNOR OF ONE-HAL T0 LOUIS A.

HARDIN, 0F BOONE, IOWA.

FIRE-DOOR.

Application filed February 2, 1914. Serial No. 815,912.

To all who/1t it may concern l ie it known that I, Jon): E. Osmrnn, a

citizen of the United States. residing at.

()wosso. lilichigan, have invented certain new and useful ll'Ill IHOVGlHentS in Fire- .Doors, of which the following is a specificaprovide an improved fire door which may be locked open or partially open or closed.

. theeby permitting draft through the door and preventing its chattering and holding it open as may be desired.

Further objects, and objects relating to structural details, will definitely appear from-the detailed description to follow.

I accon'iplish the objects of my invention by the devices and means describedin the following specification.

The invention is clearly defined and pointed out in theclaiins.

A structure which is a preferred embodi ment of my invention is clearly illustrated in the accompanying drawing forming a part of this specification, in which:

l igure I .is a side view of a structure ei'nhodving the features of my invention. Fig"; H is a front view of the structure shown in Fig. I, the lower end of the foot lever being broken away. Fig. III is a vertical section on a line corresponding to line 33 of Fig. 11, parts being shown in full lines to better illustrate their form. Fig. IV is a detail vertical section on a line corresponding to line 4-4: of Fig. III. Fig. V is a detail horizontal section on a. line corresponding to line of Fig. 111.

In the drawings similar reference characters refer to similar parts throughout the several views, and the sectional views are taken. looking in the direction of the little arrows at the ends of the section lines;

Referring to the drawings, the door frame 1 is provided. with an outwardly projecting housing comprising a. top Well 2,

side walls 3 and. bottom ledge or sill 4. The front of the housing is downwardly and inwardly inclined. The side walls are proyided with inwardly projecting flanges at the cc thereof, constituting door stops and supports for the door in its closed position. The upper parts of the side walls oi. the housing are extended beyond the top wall at 6 so that the upper edge of the door 7 is between these projecting portions and closes against the front edge of the top wall of the housing, see FigsfH and Ill.

The door pivots 8 are arranged through.

suitable bosses in the side walls to engage.

the boss-like pintle knuckles 9 of the door. The lower end of the door closes against and rests upon the sill portion 4. T he door curved in horizontal cross section as shown in Fig. V and is preferably cor rugated on its inner side, the corrugations 1.0 being vertically disposed. This makes a very strong door structure. With the door thus supported in its closed position it is supported against pressure from the inside of the tire box and at the same-time may be readily opened. T he door is provided with an upwardly projecting arm 11 secured to the lug 12 thereon. On the housing I mount a cylinder 13 having an. inlet port lei at its inner end, which is connected to the supply pipe 15 through the valve casino 16 mounted on the inner head of the cylinder. T he stem '17 of the valve 18 projects down- \vardly in position to he. engaged by the lever 19, which is pivoted .at 20 on the side of the housing and provided with a foot piece 21 so that the lever may he operated as a foot lover. The rod of the plunger 23 is connected to a forked lever mounted by the pivot 25 on the top of the. cylinder. The arms 26 of the lever 2 1' project downwardly at the sides of the cylinder. The plunger rod is connected to the lever by means of the yoke-like link 27 which is secured to the end of the plunger red by the screw 28 and to the lever by suitable pivot connections.

The lower ends of the arms of the lever are connected to the arm 11 on the door by the links 29. The lever is extended upwardly to provide a hand piece 30 for hand operation. The rotation of the plunger on the cylinder is prevented by the screwBl which engages a groove 32 in the under side of the plunger rod 22.

' ,lo retain the door 19 its open or closed or partially open position I provide a catch pin 33 arrangialto reciprocate through a suitable boss on the wall of the cylinder and engaging keeper notches Si in the plunger rod,see Fig. Ill. For convenience in operation the catch is connected by the arm $35 to the valve actuating lever 19. The valve actuating leier is arranged so that there. is lost motion in moving the lever to its valve on gaging per-silica This permits the disengag ing of the catch prior to the opening of the valve. It also permits the releasing oi? the catch without operating the valve to permit the closing of the door'or its operation by me: ns oi the hand piece 80. The cylinder, may, if desired, be provided with an escape vent or valve, not shown, but, I find that, in practice. the air escapes from the cylinder with sul'licient rapidity so that such vent or valve is not required. I

It is not desired that the door shall drop shut freely, but that its closing shall be gradual. The plunger and cylinder acts as a dash-pot. The catch for retaining it in its closed position is of decided advantage as it is found that, under certain conditions, the doors. unless well secured, chatter owing to the eli'ect of the draft thereon.

The door is well designed to withstand the action of the heat and in the event of an explosion. within the furnace it cannot be. blown out or from its hinges, unless the explosion is such as to practically destroy the furnace. This adds very greatly to the safety of the fireman and engineer, my improved fire door being especially designed for use on locomotives. The outwardly projecting housing protects the the door is open.

I have illustrated and described my improvemcnts in detail in a. simple and prac tical embodiment thereof. I have not at tempted to illustrate or describe various modifications which I contemplate, as I believe the disclosure made will enable those skilled in the art to which this invention relates, to adapt or embody the same as conditions may require. I desire, however, to be understood as claiming my improvements specifically in the form illustrated as well as broadly within the scope elf-the appended claims.

Having thusdescribed my invention what I claim as new and desire to secure by Lettors Patent, is:

1. In a fire door, the combination of a door frame comprising an outwardly projecting housing, a door pivoted at its upper end to swing upwardly and inwardly in opening, an upwardly projecting arm on said door, a cylinder mounted on said housing, a plunger, a plunger rod with keeper notches therein, acatch arranged to reciprocate through the wall of said cylinder to en gage the notches of said plunger rod, 21

fireman when forked lever pivotally mounted on said cylinder with its arms embracing the same. a yoke connecting said plunger ]'()\i with the arms of said le\ er, links connecting the arms of said lever with the arm on said door. an inlet valve for said cylinder, an operating lever for said valve. and connections for said lever to said catch, there being a lost motion connection for said lever and valve, whereby the catch released upon the actuation or the lever prior to the opening, of the valve.

in a fire door, the combination oi a door frame comprising an outwardly projecting housing, a door pivoted at its upper end to swing upwardly and inwardly in opening, an. upwardly projecting arm on said door, a cylinder mounted on said housing. a. plunger, a plunger rod with keeper notches therein, a catch arranged to reciprocate through the wall of said cylinder to engage the notches of said plunger rod, a forked lever pivotally mounted on said cylinder with its arms embracing the same, a yoke connecting said plunger rod with the arms of saidlever, links connecting the arms of said lever with the arm on said door, an inlet valve for said cylinder.

3. In a fire door, the combination of a door frame comprising an outwardly pro jecting housing, a door pivoted at its upper end to swing upwardly and inwardly in opening, an upwardly projecting arm on said d0or,'a cylinder mounted on said housing, a plunger, a forked lever pivotally mounted on said cylinder with its arms embracing the same, av yoke connecting said plunger with the arms of said lever, links connecting the arms of said lever with the arm on said door, an inlet valve for said cylinder. i

at. In a fire door, the combination of a door, an arm on said door, a cylinder, a plunger, a plunger rod with keeper notches therein, a catch arranged to reciprocate through the wall of said cylinder to engage the notches of said plunger rod, a forked. lever pivotally mounted on said cylinder with its arms embracing the same, a yoke connecting said plunger rod saith the arms of said lever, links connecting the arms of said lever with the arm on said door, an inlet valve for said cylinder, an operating lever for said valve, and connections for said lever to said catch, there being a lost motion connection for said lever and valve, whereby the catch is released upon the actua tion of the lever prior to the opening of the valvo 5. In a fire door, the combination of a door, an arm on said door, a cylinder, 9. plunger, a plunger rod withlzeeper notches therein, a catch arranged to reciprocate through the wall of said cylinder to engage the notches of said plunger rod, a forked lever pivotally mounted on said cylinder withv its arms embracing; the same, a yokeconnecting said plunger rod with the arms of said lover, links connecting the arms of said lever with the arm on said door, an inlet valve for said cylinder.

6. In a fire door, the combination of a door, an arm on said door, a cylinder, :1 plunger, a catch for said plunger, a pivotally mounted lover, a link connecting said. plunger rod and said lever, a link connecting said lever and the arm on said door, an inlet valve for said cylinder, an operating means for said valve, and connections for said valve operating means and catch, there being a lost motion connection for said valve operatingmeans and valve, whereby the catch is.

released prior to the opening of the valve and the catch may be released without open in j the valve.

i. la a fire door, the combination of. a door, an. arm on said door, a cylinder, a plunger. a catch forv said plunger, a pivotally I mounted lover, a link connecting said plunplunger, a catch for said plunger, a pit otally mounted lever adapted. as a hand lover, a link connecting said plunger rod and said lever, a link connecting said lever and the arm on said. door, an inlet valve for said cylinder, an operating means for said valve, and connections for said valve operating means and catch.

9. In a fire door,"the combination of a. door, an arm on said door, a cylinder, a plunger, a catch for said plunger, operating connections for said plunger to said doorman inlet valve for said cylinder, an. operating means for said valve, and connections for said valve operating 2; means and catch, there being a lost motion connection for said valve operating means and valve, whereby the catch is released prior to the opening of the 'alve and the catch may be released. Without opening the valve.

10. In a fire door, the combination of a door, an arm on said door, a cylinder, a plunger, a catch for said plunger, operating connections for said plunger to said door, an inlet valve for said cylinder, an operating means for said valve, and connections for said valve operating means and catch.

"for said cylinder.

11 In a fire door, the combination of doorffrarne comprisingnn outwardly projecting housing, a door pivoted at its upper cndto swing into said frame, an arm on said door projecting upwardly at the front of the housing, a cylinder mounted upon said housing,- a plunger for said cylinder having a plunger rod reciprocating outwardly above said door, a forked lever pivotally mounted. on said cylinder with its arms embracing the same. the upper end of the lever being adapted a hand. piece, a yoke embracing the front end of said cylinder. connecting the arms of said lever with said plunger, links connecting the arms of said. lever with said arm on said door, the said links being, pivoted to, the lower end of said lever arms, the pivots connecting said yoke to said lever arms being between the lever pivot and the pivots connecting the links to said lever arms, and an. inlet valve 12. In a fire door, the combination of a door pivoted at its upper end to swmg in u'ardly in opening, an upwardly projecting arm. on said door, a cylinder mounted above the door, a plunger having a plunger rod reciprocating above the door, a forked. lever pivotally mounted on said cylinder With its arms embracing the same, a yoke connecting the said plunger to the arms of said lever, links connecting the arms of said. lever to the arm on said door, the links being pivoted to the lower ends of the arm of the lever and the yoke being pivoted to the lever between the link pivots andthe lever pivot, and aninlet valve for said cylinder.

13. In a lire door, the combination of a door pivoted at its upper e'ndto swing inwardly in opening, anupwardly projecting arm on said door, a cylinder mounted above the door, a plunger having a plunger rod reciprocating above the door, a pivotally mounted lever, a link projecting inwardly from the endot the plunger rod connecting 'said plunger rod to said lever, a-link projccting inwardly from the arm of said door connecting said arm to said lever, am. an inlet valve for said cylinder.

In Witness whereof, it have hereunto set my hand and seal in the presence of two JOHN E. OSMEB, [Le] lrVitnesses:

R. R. Fox, J. N. BRICHAN.

witnesses. 

